Expansion Vessel change on Worcester 28 i junior

[Julio1960]

Hi All, does anyone know how long a professional heating engineer/plumber should take to change one if these as the vessel is clearly shot? Water coming out of the shrader valve.

Separately I have found out that occasionally it can be condensation not water and the valve is ok.

Thoughts on both?

 

[Hot&Cold]

Hi All, does anyone know how long a professional heating engineer/plumber should take to change one if these as the vessel is clearly shot? Water coming out of the shrader valve.

Separately I have found out that occasionally it can be condensation not water and the valve is ok.

Thoughts on both?

Thank you for posting the informative thread.
from your information provided,your vessel is indeed shot and a replacement is required.
Please consider the work involved to rectify and i estimate at 3.5 hours could be less or £400 cash (labour only)

 

[Julio1960]

Thanks OB. 3.5 hours is a long stint. Should inhibitor be going in as well and if so how much longer do you think that will need?

 

[Hot&Cold]

The system will need to be drained down so on refilling inhibitor is added as standard,its in the labour estimate.

OB

 

[Julio1960]

It's tempting to have a new one installed. The old one is over 14 years old now

 

[Julio1960]

Just weighing up pros and cons of cost, time and effort. If it breaks down again pump, fan PCB issue it's better off in the yard.

As a thought I could save the engineer some time by taking the housing off and draining down the system. Anything else to help speed up the process?

 

[AGAS]

As a thought I could save the engineer some time by taking the housing off and draining down the system. Anything else to help speed up the process?

not doing yourself any favours as i would suspect you was hiding something , you can't be that hard up if considering a new boiler

 

[Julio1960]

False economy if you're better off paying an extra few £'s on a new one over several engineer visits + parts to fix one on its way out?

Will just have to dig deeper under the mattress and cut back on Christmas if so.

 

[Julio1960]

If it is just a repair job what's the process for changing the expansion vessel: drain down the system, replace vessel, refill with inhibitor. Done?

 

[ianmcd]

still dont know if your expansion vessel needs changing, in my experience about 90% of expansion vessels changed on domestic boilers just needed recharging, on your boiler, if your expansion vessel does actually need replacing just fit an external one it will be a lot cheaper

 

[Julio1960]

Ian, if it's bubbling water air side then presumably you should purge it first then recharge?

Any way of telling whether it's water or condensation that's bubbling out.